package com.szq.pattern;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @description:
 * @author: szq
 * @date: 2021-08-26 10:20:03
 */
public class Singleton_00 {

    private static Map<String, Object> map = new ConcurrentHashMap<>();
}
